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| author | Fabrice Gasnier <fabrice.gasnier@st.com> | 2018-09-05 13:40:02 +0200 |
|---|---|---|
| committer | Felipe Balbi <felipe.balbi@linux.intel.com> | 2018-10-02 10:37:01 +0300 |
| commit | e0f681c2c11a25b76626cea77deb819a4754375d (patch) | |
| tree | 17e7e145ac5ce7199b3d480c005dc43243256eab /drivers/usb/dwc2/hcd.c | |
| parent | 3def4031b3e3fbb524cbd01555b057a6cef0d5e6 (diff) | |
| download | linux-stable-e0f681c2c11a25b76626cea77deb819a4754375d.tar.gz linux-stable-e0f681c2c11a25b76626cea77deb819a4754375d.tar.bz2 linux-stable-e0f681c2c11a25b76626cea77deb819a4754375d.zip | |
usb: dwc2: get optional vbus-supply regulator once
Move devm_regulator_get_optional() call to probe routine. This avoids
'vbus-supply' regulator to be requested lots of times, upon each call
to dwc2_vbus_supply_init(), e.g. like with runtime pm.
Fixes: 531ef5ebea96 ("usb: dwc2: add support for host mode external
vbus supply")
Tested-by: Artur Petrosyan <arturp@synopsys.com>
Acked-by: Minas Harutyunyan <hminas@synopsys.com>
Signed-off-by: Fabrice Gasnier <fabrice.gasnier@st.com>
Signed-off-by: Amelie Delaunay <amelie.delaunay@st.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Diffstat (limited to 'drivers/usb/dwc2/hcd.c')
| -rw-r--r-- | drivers/usb/dwc2/hcd.c | 12 |
1 files changed, 3 insertions, 9 deletions
diff --git a/drivers/usb/dwc2/hcd.c b/drivers/usb/dwc2/hcd.c index 5f23b933cafc..24aa5a3acf86 100644 --- a/drivers/usb/dwc2/hcd.c +++ b/drivers/usb/dwc2/hcd.c @@ -358,16 +358,10 @@ static void dwc2_gusbcfg_init(struct dwc2_hsotg *hsotg) static int dwc2_vbus_supply_init(struct dwc2_hsotg *hsotg) { - int ret; - - hsotg->vbus_supply = devm_regulator_get_optional(hsotg->dev, "vbus"); - if (IS_ERR(hsotg->vbus_supply)) { - ret = PTR_ERR(hsotg->vbus_supply); - hsotg->vbus_supply = NULL; - return ret == -ENODEV ? 0 : ret; - } + if (hsotg->vbus_supply) + return regulator_enable(hsotg->vbus_supply); - return regulator_enable(hsotg->vbus_supply); + return 0; } static int dwc2_vbus_supply_exit(struct dwc2_hsotg *hsotg) |